[Bug 277326] FreeBSD guest on QEMU with Hyper-V enlightenment on is no longer able to detect Hyper-V devices

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277326

--- Comment #7 from Roger Pau Monné <royger@freebsd.org> ---
(In reply to Miroslav Lachman from comment #6)
That's the same on Xen, the first CPUID signature is the HyperV one, but the
following one is the Xen one, and we want to use the Xen one, as the Viridian
set of features emulated by Xen is not very complete and just tested against
Windows guests.  This was already discussed in the differential revision of the
change for Xen: https://reviews.freebsd.org/D43508

So the question boils down to whether FreeBSD wants to treat KVM with HyperV
extensions as HyperV or as KVM.  I think the latter, as KVM is the real
hypervisor, disguising as HyperV.

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